What does eyestrain mean?
Eyestrain refers to the fatigue and discomfort of the eyes that follows sustained periods of focused visual effort, such as reading fine print, driving long distances, or working at a computer. Typical symptoms include sore or burning eyes, blurred or double vision, dryness, and tension headaches. Though uncomfortable, ordinary eyestrain is generally harmless and temporary, easing with rest, though persistent symptoms may signal an underlying vision problem worth checking. The term carries no strong emotional connotation and appears frequently in health advice, workplace-safety guidance, and product marketing for lighting and displays. In recent decades it has become especially associated with screens, prompting the informal label digital eyestrain. Clinicians know the same condition by the more formal name asthenopia. As daily life increasingly revolves around monitors and phones, eyestrain has become one of the most commonly discussed minor ailments of modern work.
nounFatigue or discomfort of the eyes, typically caused by prolonged use such as reading, screen work, or driving, and often accompanied by soreness, blurred vision, or headache.
- Physical fatigue or discomfort of the eyes caused by prolonged visual effort, especially reading, close work, or extended screen use.
"Hours of scrolling on her phone left her with nagging eyestrain and a dull headache."
"Adjusting the brightness of your monitor can significantly reduce eyestrain during long working sessions."
"His optician attributed his frequent headaches to eyestrain from uncorrected vision."
Eyestrain is almost always used as a singular mass noun; a plural form exists but is rare and generally avoided.
"Various eyestrains afflict people who work at computers all day."
The American Optometric Association has an actual name for screen-induced eyestrain — Computer Vision Syndrome — because our eyes were simply never built for eight hours a day of pixels.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of eyestrain
Eyestrain is a straightforward English compound combining 'eye', from Old English 'eage', with 'strain', from the Latin verb 'stringere', meaning to draw tight or bind. The notion of 'straining' the eyes — forcing them into tense, fatigued effort — emerged as the concept developed alongside widespread literacy and close work in the nineteenth century. The same Latin root gave English other words about tightening or binding, such as 'constrain' and 'restraint'.
How eyestrain is actually used
A neutral, everyday noun common in both medical advice and general writing; the formal clinical term is 'asthenopia'. Increasingly encountered in the compound form 'digital eyestrain' in discussions of screens and devices. Both one-word 'eyestrain' and two-word 'eye strain' are widely accepted spellings.